double Function: In addition to auditory output, it also supports simultaneous charging function, for charging while using the device Multipurpose Design: Can be used to connection to computer auditory, car MP3, headsets and other devices to realize auditory transmission and charging function Suitable for most devices with USB port and 3.5mm auditory port, such as cell phones, tablets, computers, car auditory systems The outer layer of the cable is abrasion-resistant, which strengthens the resistances to tugging and bending, and prolongs the service life Ensuring stable auditory transmission without noise interferences, providing a clear sound